Stove.



G. w. corn & H. R. GUMMER.

STOVE.

APPLICATION FILED JULY 16, 1908.

916,915. Patented Mar. 30, 1909;

2 SHEETS-SHEET 1.

ms NORRIS PETERS co. wnsnmcnm. q

G. W. COPE & H. R. GUMMER.

s'rovn. APPLICATION FILED JULY 16, 190B.

Patented Mar. 30, 1909.

2- SHEETS-SHEET 2.

I n I I I n 'auventoz S xh-mmw I THE NORRIS PETERS cm. WASHINGTON. n. c.

UNITED STATEE PATENT OFFICE.

GEORGE W. COPE, OF DETROIT, MICHIGAN, AND HENRY R. GUMMER, OF DAYTON, OHIO,

ASSIGNORS TO THE GEM CITY STOVE COMPANY, OF DAYTON, OHIO, A CORPORATION.

STOVE.

Specification of Letters Patent.

Application filed July 16, 1908.

Patented March 30, 1909.

Serial No. 4%,815.

To all whom it may concern:

Be it known that we, GEORGE W. Corn and ITEKRY R. GUMMER, citizens of the United States, residing, respectively, at Detroit, in the county of Vayne and state of Michigan, and at Dayton, county of ll fontgomery, State of Ohio, have invented certain new and usereference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in heating stoves of the type known as base burners.

The object of the invention is to provide in a stove of the above type, means for utilizing a miximum amount of the heat due to the products of combustion, and before said products of combustion are permitted to pass from the stove. The obtainment of this increased amount of heat radiation from the waste heat or products of combustion, is due to the provision of a greater amount of heat-radiating surface in stoves of this character than has heretofore been obtained.

The accompanying drawings illustrate throughout, the various passages through which the air and products of combustion travel before escaping to the chimney or main outlet flue. By the manipulation of a damper, the products of combustion may be caused to circulate throughout the back of the stove to increase the heat radiation or may be caused to pass directly to the main outlet flue. The various arrows in the drawings mark the course of the air and escaping smoke or products of combustion, and will be referred to in the detailed description of our improvements.

Before entering into a detail description of the invention, or improvements, reference is made to the accompanying drawings, of which- Figure 1, is a vertical longitudinal sectional elevation of a base burner constructed in accordance with our invention. This view illustrates a complete stove with the exception of the ornamental top portions which are omitted. The section is taken approximately on the line 6 e of Fig. 2. Fig. 2, is a sectional view on the line aa of Fig. 1. he fire pot, grate and magazine are not shown in this view. Fig. 3, is a sectional view on the horizontal line b 7) of Fig. 1. Fig. 4c, is a sectional view on the horizontal line 0 c of Fig. 1. Fig. 5, is a sectional plan view of the base on the line (i d of Fig. 1.

In a detail description of the invention, similar reference characters indicate corresponding parts.

deferring first to the base of the stove,- this consists of a base plate 1 upon which is mounted a sub-base plate 2, and both of which plates are provided with central flanges and openings 4 through which air passes upwardly from below the stove. The flanges 3 and the curved sides 5 of the subbase plate 2 form flues 6 7 8 and 15 in the base into and through which the smoke or products of combustion pass in a manner presently described. The sub-base plate 2 is provided with a depressed plate 9 above which is mounted aremovable plate 10 which constitutes the bottom of the ash box, and between these two plates is provided a chamber or flue 11 into which the air enters through the openings 4. The air is initially heated as it passes up and over the plate 9 through said openings 4. The legs of the stove have been omitted from the drawings, but it will be understood, the stove stands up from the floor a suflicient distance to permit the air to freely enter beneath it. Mounted on the base thus formed by the plates or castings 1 and 2, at the rear of the stove, are three upright plates or walls 12 1. and l i. These plates are suitably curved or shaped to provide two side-descendin' smoke lines 22 and 23, a centrally-disposed ascending smoke fine 25, and an ascending air flue 16. The air chamber or flue 11 opens into or communicates with the ascending air flue 16 at 17 as shown by the arrow at the rear of the ash box in Fig. l. The said air fine 16 is formed by the innermost plate or wall 12 and the intermediate plate or wall 13, and it extends substantially the entire width and height of the stove with the exception of the spaces occupied by a damper opening in the rear of the ash box which is controlled by a damper 18, and a fine opening 19 above the fire pct 20 through which the products of combustion may pass from the fire pot to the descending smoke fines 22 and 23, or outwardly from the stove as presently described. The opening 19 extends through the upper central portion of. the air fine 16 but is closed from communication with said air line, and said opening 19 is in a line with openings 27 and 29, the former of which is in a flue plate, and the latter of which is in the rearmost plate or wall 14. These three openings referred to, control the passage of the products of combustion from the fire pot to the descending smoke flues 22 and '23 or to the chimney fine, and will be again referred to in connection with the flue plate 26 which is an important element of the stove. The air fine 16 is provided with rei'novable plates 21 through which heated air may escape from the stove. The plates 21 also afford means for inspecting the interior of the back of the stove.

Referring to 5, the smoke lines 6 and 8 in the base of the stove communicate with the lower ends of the side-descending smoke fines 22 and 23 at the back of the stove, and from which said lines 6 and 8 re ceive the smoke or products of combustion. The lines 22 and 28 are formed by the outermost and intermediate plates or walls 1% and 13, and the ribs 24: and 24: thereon which engage each other as is clearly shown in 4;. The engaging ribs 24 and 24, and the real-most and intermediate plates i l and 13 combine to form the centrally-disposed ascending smoke fine 25 which communicates with and receives the smoke .or products of combustion from the central smoke flue 7 in the base of the stove, and which fine 7 receives said smoke or products of combustion from the smoke fines 6 and 8 in the base, see Fig. 5. Mounted in the upper portion and on the inner side of the rearmost plate or wall 14 an angular flue plate 26 hereinbefore referred to, in which the flue opening 27 is located. A damper is hinged to this flue plate and controls said opening 27. In the position the damper 28 is shown in Fig. 1., the products of combustion are prevented from passing to the chimney flue through the opening 2-9, but are enabled to pass into the side-descending smoke fines 22 and 23. hen said damper is lowered to the dotted positionl ig. 1, to open the passage in the line plate,- the smoke or products of combustion pass from the opening 19 through the flue plate, and the opening 29 to the outlet or chimney line. The fine plate 26 forms the upper terminal of the ascending smoke flue 25'which always finds an outlet through the opening 29, and said flue plate closes said ascending smoke fine from communication with the descending smoke lines 22 and The damper-controlled opening 27, it will be seen, lies between the inner opening 19 and the outer opening 29; these openings are shown to be in alinement and to provide a direct passage or flue through the back walls of the stove, which has no communication with the air fine 16. V p

it will be observed, the entire back consists of three separate and independent castings, which when united, prevent any communication between the descending smoke fines and 3, and the final outlet 29; this is due to the flue plate 26. Also the opening 19 is like vise closed against any communication with air line 16. The openings so extending through. the series of back plates are thus elfectually controlled by the damper in no case is thereany communication between these openings and the air flue 1(5. The ascending smoke fine 25 at all times has a non-obstructed communication with the opening 29 to the chimney fine. In front of the innermost plate or wall 12 is the ash pit 29 above which is the grate 30 below the fire pot 20. T he magazine 32 and the lire pot are inclosed bya suitable inclosure 32-3 of any desirable oiaian'ientation. These parts are common to all stoves of this type, and it will. be understood the usual orna mental fixtures for the top of the stove are omitte 1 from the drawings.

The manner of the operation of the stove may be briefly described as follows: The damper 28 is lowered to the position shown in dotted line, Fig. 1, to create the necessary draft and to allow the smoke to pass directly through the openings 1927 and 29 to the chin'mey. W' hen the fire has become well started, the damper 28 is closed thus causing the products of combustion to pass through the opeping 19, and to divide against the damper and pass down the descending smoke lines 22 and 23. In the base of the stove, the smoke or products of combustion pass from the lower ends of said lines 22 and 23 into the base lines 6 and 8 and thence to the central base fine 7 tl'irongh the front line This front line 15 lies in the front of the base and provides the passages between the base smoke flues. From the base line '7, the smoke, etc., pass to the central ascending smoke flue 25 and out through the opening 29. In the meantime, the air passes through the openings a in the base and into the air chamber 11 and thence to the air flue 16 where the said air becomes heated and passes out into the room or surrounding space at 34 as indicated by the arrow in Fig. l.

in the several drawings, the arrows with closedv feathers indicate the course of the smoke or products of combustion, and the arrows with the open feathers indicate the course of the air.

Having described our invention, we claim: 1. In a stove, a fire pot, a back consisting of three intcrcoimected plates or walls forming two side-descending smoke fines and a centrally disposed ascending smoke flue which lie between the two outermost walls,

the outermost plate or wall having an opening arranged at the top of the ascending smoke fine, a fiue plate surrounding said opening and closing the ascending smoke tlue from con'nnunication with the descending smoke lines, the two innermost walls or plates forming an air fine extending substantially the width and height of said back and having a centrally-disposed opening in alinement with the opening in the outermost plate or wall and through which the smoke or products of combustion may pass from the fire pot to the descending smoke fines or to the opening in the outermost plate or wall, and a swinging damper mounted. upon the flue plate and controlling the passage of the products of combustion trom. the fire pot to the descending smoke fines or to the opening in the outermost wall or plate.

In a store, a fire pot, a back consisting of three interconnected plates or walls forming two side-descending smoke fines and a centrally-disposed ascending smoke flue lying between the outer and intermediate plates or walls, the rear-most plate or wall having an opening which provides an outlet for the ascending smoke fine, the innermost and intermediate plates or walls forming an air fine which extends substantially the width and height of said back, said innermost and intermediate plates or walls having a centrally-disposed opening providing an outlet for the products of combustion from the the pot, said opening being inclosed from communication with the air Hue, a fine plate attached to the outermost plate or wall and inclosing the opening therein, said fine plate extending inwardly and abutting againstthe intermediate wall and forming a continuation of the ascending smoke due. and a damper adapted to control the passage of the products of combustion from the fire pot to the descending smoke lines and thence to the ascending smoke fine or from the fire pot directly to the opening in the rear plate or wall and tl'irough the ilue plate.

3). In a stove, a fire pot, a back consisting of three interconnected plates or walls, the two outermost of which form two side-descending smoke fiues and a centrally-disposed ascending smoke flue, the outermost wall having an opening forming an outlet for the ascending smoke flue and lying between the two descending smoke fiues, a flue plate forming the upper extension of the ascending smoke fine, said flue plate surrounding the opening in the rearmost plate or wall and closing the ascending smoke flue from communication with the descending smoke lines, the innermost and intermediate plates or walls forming an air fine, said innermost and intermediate plates or walls having an opening above the fire pot through which the products of combustion may pass to the descending smoke fines and to the ascending smoke flue through the base of the stove, or to the fine plate and thence to the opening in the rearmost plate or wall, and a damper hinged to the inner terminal of the fine plate and thus controlling the pas sage of the products of combustion passing through the opening in the innermost and intermediate plates or walls.

4. In a stove, a fire pot, a back composed of three plates or walls, the outermost plate or wall and the intermediate plate or wall being corrugated to form an ascending smoke flue and descending smoke fines, the innermost plate or wall and intermediate plate or wall being flanged to form an opening above the fire pot, a fine plate mounted on the outermost plate or wall at the upper end of the ascending smoke fine and forming a continuation of the passage through the opening in the innermost and intermediate plates or walls, said fiue plates separating the upper ends of the descending smoke flues from the ascending smoke fine, and a damper controlling the passage of the products of combustion from the fire pot through the fiue plate or to the descending smoke fiues.

In a stove, a fire pot, a back constructed of three interconnected plates or walls, the rearmost and intermediate plates or walls forming two side-descending smoke fines and a centrally disposed ascending smoke fine, a fine plate mounted on the rearmost wall and forming a continuation of the ascending smoke fiue and separating said ascending smoke flue from the descending smoke fines, the innermost and intermediate plates or walls forming an air fine which extends substantially the width and heightpf the back, said walls being provided with an opening in alinement with the fine plate, a damper between said opening and said fine plate controlling the passage of the products of combustion to the side-descending smoke fines or to the fine plate, and a base providing an air chamber which communicates with the air fine between the innermost and intermediate walls, and said base having smoke fines providing passageways between the side-descending smoke fines and the ascending smoke fine.

6. In a stove, the combination with a base having a centrally-disposed smoke fine and two parallel air openings on each side of said smoke fine and adapted to admit air from below the base, a plate forming the bottom of the ash pit and the top of a chamber to which said air is admitted, a fire pot supported on said base above the ash pit, a back consisting of a series of interconnected plates or walls which are supported upon the fire pot and the base, the outermost and intermediate plates being suitably formed to form two descending smoke fines which communicate with outwardlydying smoke rfluies in the base, and a centrally-disposed ascending smoke flue which communicates with the centrally-disposed smoke flue in the base, the two innermost plates forming between them an air flue which extends substantially the Width and height of the back,

and communicates with the air chamber at the top of the base, the outermost Wall having a flue plate attached thereto Which prorides a continuation of theaseending smoke line and separates it from the descending smoke fines, the two innermost Walls having an opening in alinement with the .flue plate, and a damper supported on said flue plate and adapted to control the passage of the products of combustion through the [ins .plate or to the descending smoke fines.

'7. In a stove, a fire pot, a back consisting of three interconnected plates or Walls, the

outermost and intermediate plates or Walls forming two side -descend1ng smoke Hues, and

a centrally-disposed ascending smoke flue, the innermost and intermediate plates or Walls forming an air flue extending substantially empire the width and height of the stove, and having an opening affording an outlet for'the' products of combustion from the fire pot, a flue )lELtG mounted on the outermost late or 1 wall and forming a flue much 1s a continuation of the ascending smoke flue and a con-j t-in-uatlon of the outlet or opening in the in- GEORGE W. COPE. HENRY R. GUMMER.

\Vi'tnesses for Geo. WV. Cope:

.AMELIA WILLIAMS, JAMES P. BARRY. Witnesses for H. R. Gummer:

G. B. Mo'r'rnn, F. A. 'GQENNER. 

